Replace eslint-plugin-sort-class-members with @typescript-eslint/member-ordering

[EvgenyOrekhov]

Or not?

I'm talking about the default @typescript-eslint/member-ordering configuration with natural-case-insensitive sorting within member groups (in anticipation of #449).

Advantages of @typescript-eslint/member-ordering over eslint-plugin-sort-class-members:

• its default configuration is more fine-grained

• it covers more cases (e. g. type literals)

• I suspect it might be more popular (just because it has good defaults)

• it should be more stable, robust, and up-to-date (just because it's TypeScript ESLint)

• Wait for [@typescript-eslint/member-ordering] auto-fix typescript-eslint/typescript-eslint#2296

[EvgenyOrekhov]

It's not autofixable. Need to wait before it is typescript-eslint/typescript-eslint#2296